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Installation
Chimney
The chimney height and the position of the chimney terminal should conform to Building
Regulations.
Check that the chimney is in good condition, dry, free from cracks and obstructions. The
diameter of the flue should not be less than 150mm and not more than 230mm. If any of
these requirements are not met, the chimney should be lined by a suitable method.
The chimney must be swept before connection to the stove.
Where the chimney is believed to have previously served an open fire installation, it is
possible that the higher flue gas temperature from the stove may loosen deposits that were
previously firmly adhered, with the consequent risk of flue blockage.
It is therefore
recommended that the chimney be swept a second time within a month of regular use after
installation.
If you have any doubts about the suitability of your chimney, consult your local
dealer/stockist.
If there is no existing chimney then either a prefabricated block chimney in accordance with
Building Regulations Approved Document J, or a twin-walled insulated stainless steel flue to
BS 4543 can be used. These chimneys must be fitted in accordance with the manufacturer's
instructions and Building Regulations.
Flue Draught
A flue draught of minimum 1.2mm to a maximum 2.5mm water gauge is required for
satisfactory appliance performance. The flue draught should be checked under fire at high
output. If it exceeds the recommended maximum, a draught stabiliser must be fitted so that
the rate of burning can be controlled and to prevent over firing. If the reading is less than the
recommended minimum than the performance of the appliance will be compromised.
Connection to the Chimney
An existing fireplace opening can be bricked up or sealed with a register plate. A short
length of flue pipe of a minimum 152mm internal diameter may then be used to connect the
stove to the chimney. This flue pipe should be of 316 grade stainless steel or vitreous
enamelled, nominal thickness 1.2mm. Ensure that the pipe end is no closer than 76mm to the
side or rear chimney walls.
Ideally, the old fireplace should be filled in so that there is a smooth streamlined entry into
the flue way.
The length of any horizontal run of flue pipe must not exceed 152mm.
It is essential that all connections between the stove and chimney-flue are sealed and made
airtight.
Both the chimney and flue pipe must be accessible for cleaning and if ANY parts of the
chimney cannot be reached through the stove (with baffle brick removed), a soot door must
be fitted in a suitable position to enable this to be done.
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